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What are the advantages of a mixer compared to an air-source heat pump?
For public bathhouses, common methods of obtaining heat sources include air-source heat pumps, boiler heating, and mixing units. Below, we’ll introduce the advantages of using a mixing unit compared to an air-source heat pump.
Disadvantages of air-source heat pumps
1. Air-source heat pumps are highly dependent on the ambient temperature. They can operate effectively within a temperature range of minus 10 degrees Celsius to plus 43 degrees Celsius. If the temperature drops below minus 10 degrees Celsius, the unit will start to frost over.
2. Under high temperature and high pressure, prolonged operation of the machine can lead to damage to the compressor.

Next, let me introduce the advantages of mixing valves.
1. Intelligent, with automatic water temperature control—convenient, water-saving, and energy-efficient.
2. High reliability, strong anti-interference capability, and long service life.
3. Wide temperature control range and high temperature control accuracy—water outlet temperatures can be maintained within a range from 2°C above the cold water temperature to 2°C below the hot water temperature.
4. Small in size, easy to install, and saves both raw materials and building space.
5. Digital display, intuitive and easy to use, with over- and under-temperature alarm functions, and featuring an automatic power-off function.
6. Not affected by water pressure; there are no conditional restrictions on cold or hot water pressure.
7. Unique valve design with low pressure drop and independent intellectual property rights.
8. Has memory function.
Longzhida Company Successfully Hosted the Victory Parade Commemorating the War of Resistance.
Longzhida Company Successfully Hosted the Victory Parade Commemorating the War of Resistance.
Today is a day that every Chinese person should solemnly remember—the 80th anniversary of the victory of the Chinese People’s War of Resistance Against Japanese Aggression and the World Anti-Fascist War.
On July 2, Chengde Longzhida Company held a meeting with the Sino-German Institute. After thorough discussions between the two sides, Mr. Bai, General Manager of Longzhida Company, and the faculty team from the Sino-German Institute reached a consensus: Longzhida Company officially entrusted the Sino-German Institute to carry out the design and R&D work for a new type of ultrasonic water meter.
On May 30, Longzhida Company successfully held an exceptionally meaningful event titled “Welcoming the Eighth ‘National Science and Technology Workers’ Day’: Promoting the Spirit of Scientists.”